Added two web servers + one fix

Added two web servers: 
* GoAhead Web Server (http://embedthis.com/products/goahead/index.html)
* Embedthis-http (https://github.com/embedthis/http)
Icons will follow.

Additionally, used word boundary for Apache, as suggested by @ElbertF in #217.
GoAhead Web Server -> GoAhead
Icons for the new apps
Merge pull request #220 from SebastianLopienski/patch-4

Added two web servers + one fix